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Webster 1913 Edition

Adj.

[

Ortho-

+ Gr. [GREEK] to run.]

Of or pertaining to orthodromy.

Adj.

[See orthodromy.] Pertaining to orthodromy.

orthodromic ‎(not comparable)

Of or relating to a means of navigation by following an arc of the great circle corresponding to the shortest distance between two points on the globe.
(of neurons) Passing along neurological impulses in a normal (expected) direction.

passing along neurological impulses in a normal direction